This is kind of a fun thread. The only real difficulty of either system is based on one's familiarity. People always try to convert or compare the system with which they are not familiar to the one with which they are familiar instead of learning them separately without cross-reference. I'm not saying anybody is wrong to do that because we always try to put things into a context we understand. I'm just saying that this comparison is what creates the biggest barrier to implementation of the system with which we are least familiar.
Take some of the conversation here, apply a bit of mutatis mutandis, and you have the comments of those thinking a minute of angle means an inch at 100 yards having trouble with milliradians.
